In Pixar's Cars 3, the high-tech racer who replaces Lightning McQueen as the dominant competitor is Jackson Storm.
Storm belongs to a new generation of racers built around advanced simulation, data analysis, and aerodynamic design. His speed quickly makes older competitors look outdated, and his victories help trigger McQueen's crisis about whether he can continue racing at the highest level.
Armie Hammer provides Storm's English voice. The character is intentionally designed as a contrast to McQueen: Storm is confident in modern technology and dismissive of racing traditions, while McQueen has experience, relationships, and a growing understanding of mentorship.
Jackson Storm is not Chick Hicks, McQueen's principal rival from the first Cars film. Chick is an older Piston Cup competitor, whereas Storm belongs to the newer generation introduced in Cars 3. The film ultimately treats racing knowledge and teamwork as valuable alongside raw technological performance.